In order to investigate the pricing strategies of shared accommodation platform enterprises under the severe imbalance between the supply and demand in the tourism market in the post-pandemic era,based on the Hotelling model, by separately analyzing the pricing strategies under different bilateral user affiliations on the shared platform, this study comparatively discusses the impact of network externalities and user affiliation on the pricing strategies of shared accommodation platform enterprises. The findings reveal that in a competitive market environment, it is most beneficial for different shared accommodation platform enterprises to set the same service fees for landlords (or consumers). When the level of differentiation between platforms is low, multi-homing is more advantageous for platforms, consumer surplus, and social welfare. User affiliation alters the impact of the level of differentiation between platforms, cross-group network externalities, and within-group network externalities on service fees and profits, but does not change its impact on consumer surplus and social welfare.